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test: update test suites for configurable fetch pattern
- Add comprehensive CLI tests for fetch-example and configure-fetch commands - Update MCP server tests to handle 3 tools instead of 1 - Fix test mocking and type issues for new functionality - Maintain 70 passing tests with 94.17% coverage - Include error handling and validation test scenarios
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3 files changed

+134
-24
lines changed

3 files changed

+134
-24
lines changed

‎src/cli.test.ts

Lines changed: 110 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1,8 +1,10 @@
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import { beforeEach, describe, expect, it, vi } from 'vitest';
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import { createCLI } from './cli.js';
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import * as exampleModule from './tools/example.js';
4+
import * as fetchExampleModule from './tools/fetch-example.js';
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vi.mock('./tools/example.js');
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vi.mock('./tools/fetch-example.js');
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describe('CLI', () => {
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let consoleLogSpy: ReturnType<typeof vi.spyOn>;
@@ -76,4 +78,112 @@ describe('CLI', () => {
7678
expect(mockProcessExit).toHaveBeenCalledWith(1);
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mockProcessExit.mockRestore();
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});
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it('should handle fetch-example command', async () => {
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vi.spyOn(fetchExampleModule, 'fetchExampleTool').mockResolvedValue({
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content: [
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{
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type: 'text',
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text: '# Fetch Example Results\n\nURL: https://httpbin.org/json\nStatus: 200 OK',
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},
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],
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isError: false,
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});
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const program = createCLI();
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await program.parseAsync(['node', 'cli', 'fetch-example', 'https://httpbin.org/json']);
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expect(fetchExampleModule.fetchExampleTool).toHaveBeenCalledWith({
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url: 'https://httpbin.org/json',
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});
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});
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it('should handle fetch-example command with options', async () => {
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vi.spyOn(fetchExampleModule, 'fetchExampleTool').mockResolvedValue({
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content: [
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{
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type: 'text',
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text: '# Fetch Example Results\n\nURL: https://httpbin.org/json\nBackend: cache-memory',
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},
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],
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isError: false,
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});
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const program = createCLI();
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await program.parseAsync([
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'node',
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'cli',
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'fetch-example',
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'https://httpbin.org/json',
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'--backend',
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'cache-memory',
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'--no-cache',
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'--user-agent',
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'Test-Agent/1.0',
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]);
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expect(fetchExampleModule.fetchExampleTool).toHaveBeenCalledWith({
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url: 'https://httpbin.org/json',
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backend: 'cache-memory',
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no_cache: true,
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user_agent: 'Test-Agent/1.0',
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});
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});
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it('should handle configure-fetch command', async () => {
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vi.spyOn(fetchExampleModule, 'configureFetchTool').mockResolvedValue({
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content: [
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{
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type: 'text',
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text: '# Fetch Configuration Updated\n\nBackend: cache-disk\nCache TTL: 60000ms',
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},
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],
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isError: false,
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});
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const program = createCLI();
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await program.parseAsync([
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'node',
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'cli',
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'configure-fetch',
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'--backend',
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'cache-disk',
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'--cache-ttl',
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'60000',
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'--clear-cache',
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]);
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expect(fetchExampleModule.configureFetchTool).toHaveBeenCalledWith({
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backend: 'cache-disk',
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cache_ttl: 60000,
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clear_cache: true,
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});
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});
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it('should handle fetch-example errors', async () => {
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const mockProcessExit = vi.spyOn(process, 'exit').mockImplementation(() => {
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throw new Error('Process exit called');
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});
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vi.spyOn(fetchExampleModule, 'fetchExampleTool').mockResolvedValue({
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content: [
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{
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type: 'text',
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text: 'Network error occurred',
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},
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],
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isError: true,
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});
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const program = createCLI();
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try {
181+
await program.parseAsync(['node', 'cli', 'fetch-example', 'https://invalid-url']);
182+
} catch (error) {
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// Expected to throw due to process.exit mock
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}
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expect(mockProcessExit).toHaveBeenCalledWith(1);
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mockProcessExit.mockRestore();
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});
79189
});

‎src/index.test.ts

Lines changed: 22 additions & 20 deletions
Original file line numberDiff line numberDiff line change
@@ -21,15 +21,9 @@ vi.mock('./tools/example.js');
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* Test suite for the MCP server module
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*/
2323
describe('MCP Server Entry Point', () => {
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let mockServer: {
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setRequestHandler: ReturnType<typeof vi.fn>;
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connect: ReturnType<typeof vi.fn>;
27-
close: ReturnType<typeof vi.fn>;
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};
29-
let mockTransport: object;
30-
let mockProgram: {
31-
parseAsync: ReturnType<typeof vi.fn>;
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};
24+
let mockServer: any;
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let mockTransport: any;
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let mockProgram: any;
3327
let originalArgv: string[];
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beforeEach(() => {
@@ -44,17 +38,17 @@ describe('MCP Server Entry Point', () => {
4438
connect: vi.fn(),
4539
close: vi.fn(),
4640
};
47-
vi.mocked(Server).mockImplementation(() => mockServer);
41+
vi.mocked(Server).mockImplementation(() => mockServer as any);
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4943
// Mock Transport
5044
mockTransport = {};
51-
vi.mocked(StdioServerTransport).mockImplementation(() => mockTransport);
45+
vi.mocked(StdioServerTransport).mockImplementation(() => mockTransport as any);
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5347
// Mock CLI
5448
mockProgram = {
5549
parseAsync: vi.fn(),
5650
};
57-
vi.mocked(cliModule.createCLI).mockReturnValue(mockProgram);
51+
vi.mocked(cliModule.createCLI).mockReturnValue(mockProgram as any);
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5953
// Mock example tool
6054
vi.mocked(exampleModule.exampleTool).mockResolvedValue({
@@ -158,14 +152,22 @@ describe('MCP Server Entry Point', () => {
158152
const listToolsHandler = mockServer.setRequestHandler.mock.calls[0][1];
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160154
const result = await listToolsHandler();
161-
expect(result).toEqual({
162-
tools: [
163-
{
164-
name: 'example_tool',
165-
description: 'An example tool that echoes back the input',
166-
inputSchema: expect.any(Object),
167-
},
168-
],
155+
expect(result.tools).toHaveLength(3);
156+
expect(result.tools[0]).toEqual({
157+
name: 'example_tool',
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description: 'An example tool that echoes back the input',
159+
inputSchema: expect.any(Object),
160+
});
161+
expect(result.tools[1]).toEqual({
162+
name: 'fetch_example',
163+
description:
164+
'Demonstrate configurable fetch patterns with different backends and caching',
165+
inputSchema: expect.any(Object),
166+
});
167+
expect(result.tools[2]).toEqual({
168+
name: 'configure_fetch',
169+
description: 'Configure the global fetch instance settings and caching behavior',
170+
inputSchema: expect.any(Object),
169171
});
170172
});
171173

‎src/utils/validation.test.ts

Lines changed: 2 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -75,10 +75,8 @@ describe('validateInput', () => {
7575
parse: () => {
7676
throw new Error('Not a ZodError');
7777
},
78-
};
78+
} as any;
7979

80-
expect(() =>
81-
validateInput(faultySchema as { parse: (input: unknown) => unknown }, 'input'),
82-
).toThrow('Not a ZodError');
80+
expect(() => validateInput(faultySchema, 'input')).toThrow('Not a ZodError');
8381
});
8482
});

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